```python
#!/usr/bin/env python

from fabric.api import *
from fabric.contrib.console import confirm
from fabric.utils import abort
from fabric.colors import *

env.hosts = ['172.16.5.50']
env.port = 22
env.user = 'root'
env.password = 'Password1'

def hostname():
	run('hostname')

def ls(path='.')
	run('ls {0}'.format(path))

def tail(path='/etc/pas', line=10):
	run('tail -n {0} {1}'.format(line, path))

def hello():
	with settings(hide('everything'), warn_only=True):
		result = run('anetstat -lntp | grep -w 25')
		print(result)
		print(result.return_code)
		print(result.failed)
```